The Marina air stone is ideal for adding accents in any aquarium the air stone diffuses air, creating water movement.
<br/ >The air stone also increases surface agitation, accelerates oxygen replenishment and helps release carbon dioxide build-up.
<br/ >Simply connect the air stone to your airline tubing and place it in the desired location.
<br/ >Cylindrical shape.
<br/ > Size: 2.84 cm (1.5 in).
<br/ >2-pack.